This character is purely fictional and was developed in Second Life. His story is up for debate, seeing as he was rarely played. But I'll do what I can to fill in major gaps.

RC-0956 was born and raised like any other Clone Commando. He had a squad, and they went on various missions. They had a 100% success rate for missions. The squad found itself in planets that didn't technically exist, and planets that had supposedly been destroyed in wars past. They had a very close connection to the Jedi and other troopers that often accompanied them. The other three commandos in his squad even ended up in secret relationships with jedi. That wasn't Sand Panther's taste. During a mission, RC-0956 was the only one operating. The other three were designated to be resting from injuries. He ran out of ammo very quickly, as he soon realized that this was a four man mission, not something a single Commando could take care of. He quickly extinguished such a ludicrus remark, readied his wrist blade, and silently killed the entire army he was facing. He returned to camp with his boots and gauntlets covered in blood. When he told the story of his exploits, his team members gave him the name Sand Panther. When Order 66 came, Sand Panther was the only one to follow the order, starting with his squad's mates. After their deaths, his squad turned against them, and met their end aswell.

His determination to complete the job got him several medals and honors, and he was even operating with Delta Squad at one time. He was labelled one of the most decorated within the Commandos, and was then killed when the clones were ''weeded'' out of the Empire as signs of the corrupt old Republic.